feat!: port proxy plugin to Velocity 4

.github/workflows/gradle.yml

@@ -1,6 +1,6 @@
 name: Gradle Build
 
-on: [push, pull_request]
+on: [push, pull_request, workflow_dispatch]
 
 jobs:
   build:
@@ -10,22 +10,22 @@ jobs:
     - name: Checkout Repository
       uses: actions/checkout@v7
 
-    - name: Set up JDK 21
+    - name: Set up JDK 25
       uses: actions/setup-java@v5
       with:
-        java-version: 21
+        java-version: 25
         distribution: 'temurin'
         cache: 'gradle'
 
-    - name: Build with Gradle
-      uses: nick-invision/retry@v4
-      with:
-        timeout_minutes: 5
-        max_attempts: 2
-        command: ./gradlew clean build
+    # Velocity 4 port: only the proxy module is maintained in this fork.
+    # The backend modules (paper/fabric/sponge/minestom) are unchanged from
+    # upstream — use the upstream 1.4.1 release jars for backend servers.
+    - name: Build proxy plugin
+      run: ./gradlew :signedvelocity-proxy:build -x test --no-daemon
+
     - name: Upload build artifact
       uses: actions/upload-artifact@v7
       with:
-        name: SignedVelocity
-        path: build/SignedVelocity-*.jar
-
+        name: SignedVelocity-Proxy
+        path: build/SignedVelocity-Proxy-*.jar
+        if-no-files-found: error

build.gradle.kts

@@ -12,7 +12,7 @@ allprojects {
     }
     java {
         toolchain {
-            languageVersion.set(JavaLanguageVersion.of(21))
+            languageVersion.set(JavaLanguageVersion.of(25))
             vendor.set(JvmVendorSpec.AZUL)
         }
     }

gradle/libs.versions.toml

@@ -3,7 +3,7 @@ metadata.format.version = "1.1"
 [versions]
 
 # CompileOnly dependencies
-velocity = "3.4.0-SNAPSHOT"
+velocity = "4.1.0-SNAPSHOT"
 paper = "26.1.2.build.65-stable"
 minestom-server = "2025.10.05-1.21.8"
 minecraft = "1.21.9-rc1"

velocity/build.gradle.kts

@@ -7,16 +7,19 @@ plugins {
 
 dependencies {
     compileOnly(libs.velocity.api)
-    compileOnly(libs.velocity.proxy)
     annotationProcessor(libs.velocity.api)
     implementation(libs.bstats)
 
     compileOnly(libs.packetevents.velocity)
-    compileOnly(libs.vpacketevents)
     implementation(projects.signedvelocityShared)
 }
 
 tasks {
+    // Velocity 4.x artifacts are published for JVM 25 — this module must match,
+    // overriding the repo-wide release 21 set in the root build script.
+    withType<JavaCompile> {
+        options.release.set(25)
+    }
     build {
         dependsOn(shadowJar)
     }

velocity/src/main/java/io/github/_4drian3d/signedvelocity/velocity/SignedVelocity.java

@@ -26,7 +26,6 @@
         version = Constants.VERSION,
         description = "Allows you to cancel or modify messages or commands from Velocity without synchronization problems",
         dependencies = {
-                @Dependency(id = "vpacketevents", optional = true),
                 @Dependency(id = "packetevents", optional = true)
         }
 )

velocity/src/main/java/io/github/_4drian3d/signedvelocity/velocity/packet/PacketAdapter.java

@@ -5,13 +5,14 @@
 
 import java.util.Map;
 
-public sealed interface PacketAdapter permits PacketEventsAdapter, VPacketEventsAdapter {
+public sealed interface PacketAdapter permits PacketEventsAdapter {
   void register();
 
   static void register(final Injector injector, final PluginManager pluginManager) {
+    // VPacketEvents support was dropped in the Velocity 4 port: its adapter
+    // required velocity-proxy internals that PaperMC no longer publishes for 4.x.
     final Map<String, Class<? extends PacketAdapter>> adapters = Map.of(
-            "packetevents", PacketEventsAdapter.class,
-            "vpacketevents", VPacketEventsAdapter.class
+            "packetevents", PacketEventsAdapter.class
             // Probable support of protocolize?
     );
     for (final var adapter : adapters.entrySet()) {